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A characterization method of oil and gas enrichment degree

An oil and gas technology, applied in the field of oil and gas exploration, can solve problems such as large errors and inability to characterize the degree of oil and gas enrichment in a single well, and achieve the effects of a wide range of applications, simple and easy operation, and accurate calculation results.

Active Publication Date: 2019-01-11
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0003] At present, most of the existing characterization methods for the degree of oil and gas enrichment start from a macro perspective, and indirectly characterize the degree of oil and gas enrichment by establishing the relationship between the reserves of a certain block and a certain accumulation factor. The error is large, and it is impossible to characterize the oil and gas enrichment degree of a certain section of a single well

Method used

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  • A characterization method of oil and gas enrichment degree
  • A characterization method of oil and gas enrichment degree
  • A characterization method of oil and gas enrichment degree

Examples

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Embodiment 1

[0049] To characterize the oil and gas enrichment degree of wells with unknown reserves in the Longfengshan area includes the following steps:

[0050] (1) Based on the mud logging data, well logging data and oil testing data of 16 wells with known reserves in the Longfengshan-Dongling area, determine the oil and gas show levels contained in different intervals in the known reserves wells mentioned in each data , and use the above assignment table (Table 1) to assign values ​​to various oil and gas indication levels. Take K of SN108 well 1 yc 3 Taking the horizon as an example, the levels of oil and gas shows contained in this interval and their assignment results are shown in Table 2.

[0051] Table 2 K of well SN108 1 yc 3 Statistical table of each parameter of layer

[0052]

[0053] (2) Calculate the total thickness corresponding to each oil and gas show level in each well and interval in each data, and count the total sandstone thickness of each interval in units ...

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Abstract

The invention provides a characterization method of oil and gas enrichment degree, belonging to the technical field of oil and gas exploration, which can characterize the oil and gas enrichment degreeof each interval of a single well. The characterization method of oil and gas enrichment degree comprises the following steps: according to mud logging data, well logging data and oil testing data ofa plurality of known reserves wells, determining and assigning oil and gas display grades contained in different intervals in the known wells in each kind of data respectively; calculating the totalthickness corresponding to each oil and gas display level and the total thickness of sandstone in each interval of each well in each data, and then calculating the effective oil and gas accumulation value of each data for each interval; linearly fitting the relationship between the reserves abundance corresponding to each interval of a known well and the effective values of oil and gas accumulation of three kinds of data as an evaluation formula; calculating the predicted reserve abundance corresponding to each interval of unknown reserve well by using the evaluation formula.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploration, in particular to a characterization method for oil and gas enrichment degree. Background technique [0002] Exploration results show that the degree of oil and gas enrichment in different basins or sags is quite different. At the same time, there are also obvious differences in the degree of oil and gas enrichment and enrichment intervals in different structural belts and different well positions in the same area. Therefore, to determine the oil and gas The degree of enrichment is of great significance for evaluating the potential of oil and gas resources and guiding well exploration and deployment. [0003] At present, most of the existing characterization methods for the degree of oil and gas enrichment start from a macro perspective, and indirectly characterize the degree of oil and gas enrichment by establishing the relationship between the reserves of a certain block and a ce...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0639G06Q50/02
Inventor 蒋有录范婕刘景东林彧涵苏圣民
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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